1. Which soil is formed from lava rocks.
a. Black soil b. Silt c. Sandy soil d. none of these
2. Where is alluvial soil found?
a. Desert region b. northern plains c. Deccan region d. none of these
3. Which of these soils is best for growing rice.
a. Red soil b. laterite soil c. alluvial soil d. none of these
4. Alluvial soil is made from __________.
a. Sand & silt b. mud & cement c. brick & clay d. None of these
5. Sandy soil is found in __________.
a. Mountain b. sea beach c. desert d. water
6. __________ is an important natural resource.
a. Factory b. industry c. building d. soil
7. A __________ is a structure that helps in controlling the flow of water.
a. Bridge b. fly – over c. dam d. road
8. Different soils are good for growing different types of __________.
a. Crops b. swing c. building d. all of these
9. Lakes, river, rain and ground water are the main source of __________ water.
a. Washing b. bathing c. cleaning d. fresh
10. The removal of top soil by wind and water –
a. Soil conservation c. soil protection
b. Soil erosion d. soil preservation
11. Which of the following is non metals?
a. Coal b. mica c. petroleum d. all of these
12. Which was the first metal to be used by humans.
a. Iron b. steel c. silver d. copper
13. Which of these can be made from aluminium.
a. Utensils b. rocks c. gravels d. plastics
14. What is produced from steel plants.
a. Coal b. steels c. plastics d. clothes
15. __________ are naturally occurring substances found in the earth rocks.
a. Mines b. ores c. minerals d. rocks
16. __________ is obtained from petroleum.
a. Stone & soil b. Mica & clay c. Stone & soil d. Petrol & Diesel
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Answer:
Black Soil
Black soil is formed by the weathering or breaking of igneous rocks and also by the cooling or solidification of lava from the volcano eruption. Therefore, it is also called as the lava soil.
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